Mechanical movement.



D. D. GORDON.

MECHANICAL MOVEMENT.

APPLICATION FILED NOV. 24, 1913.

1,180,642. Patented Apr. 25, 1916.

Wmagar JLl/RZ/EY Dal/dell Gordon W @lfl wwi UNITED STATES PATENT OFFICE.

DAVID D. GORDON, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

eEN rRAL WEST T allwrhom't 7n "concern:

.Be itknown tiat I, DAVID D. GORDON, t'acitizen o f -t he United States, residing at "Chicago,- in the county of Cook and State of Illinois, hav-einvented a certain new and -useful liiipi'oi'eil ient' in Mechanical Movements, of 'wl'iichthe following is a full, clear, concise, and exact description, reference being Thad to the accompanying drawings; forming a part of this specificatio'n. 1

'L\I lll\'l1tl0ll relates .to switching devices and has for its object to provide an improved mechanical movement for such or similar devices.

-The movementillustrated herein ras. as stated, a variety of uses but it is of particular utility, for instance, in connection with a switching device and is of use in connec- 'tion with a socket or pendant switch or such similar structure.

The application of my invention will be understood, of course, with whatever device it maybe associated, but I have decided herein to illustratemy' invention in connection with a socket and a pendant switch, and the description-herein will be conined Specifically to'these' devices as 'itis thought they-will readily illustrate the nature of my invention. 1

It is the object ofmy invention, for instance, to provide a mechanical movement for a switch in which a suitable actuating lever for handle isprovided which maybe rotated forwardly or backwardly, of the reciprocating variety, and which may effect a snap action movement of a switch element both for circuit closure and circuit opening irrespective of the direction of movement of the handle or other operating device.

My invention is designed to provide a simple movement of the above character, and I will explain it more in detail by referring to the accompanying drawing illustrating the same as applied to a socket and pendant switch, in which Figure 1 is a longitudinal sectional view of a socket constructed in accordance with my invention; Fig. 9 is a top plan view of the operating mechanism shown in Fig. 1 with the cap shell removed; Fig. 3 is a longitudinal sectional view of a. pendant switch constructed in accordance with my invention; Fig. l is a sectional view on line ELECTRIC CO., OF CHICAGO, ILLINOIS, CORPORATION OF ILLINOISi c MECHANICAL. MOVEMENT.

v I; I

Patented Apr. 25, 1916;

, Application filed November 241913. Serial No. 802,795.

b?) of Fig. 3, and Fig. 5 shows the structure of Fig. 1 in its alternative form.

Referring more particularly to Figs. 1, 2 and 5 I illustrate asockethaving a normally screw threaded contact member 1 and the central contact member 2. The screw threaded contact member is connected by means of a binding post 3' to the entering wire 4. whereas the other entering wire 5 is connected by means of a binding post 6 to a switch element 7. This switch element is pivoted at 6, if desired, and is movable between limit stops 8 and'9. In its position against the stop 8 the switch element 7 makes contact with a contact element 10 connected directly to the central contact member '12, thus completing the circuit from the wires 4: and 5 to the lamp socket terminals. 'hen the switch element 7 is in its alternative position resting against the stop 9, then the circuit through the socket is open as will be readily apparent.

Now in order to move the switch element 7 by snap action both to make and break the circuit. I provide a handle 11 pivoted in posts 12 and 13 as shown, which has a crank ll, which crank has a spring 15 coiled about it, the free ends of which spring then extend substantially parallel, one of the extremities 16 resting against-the screw 6 in the particular embodiment shown and slidable along said screw,and the other leg 17 of said spring being bent V shaped andresting against the shank of a screw 18. The heads of the screws 18 and (3, of course, 'serve also to prevent displacement of these spring arms. I

Now assume that the parts are in the position of Fig. 1 and the handle 11 is turned either clockwise or contra-clockwise. \Yhichever direction of movement is made the spring will ultimately be drawn toward the left until the apex of the triangular portion of the leg 17 passes the screw 18, at which time the spring presses the element 7 toward the right as will be readily appan ent because the screw then slides along the other face of the angular portion of the spring. As the legs 16 and 17 are not exactly in line, they will clear during this movement.

It is of course understood that the tendency of the legs 16 and 17 is to separate. the action of the spring being in that direction.

' The circuit is thus opened. I Now should it ments 19 and 20 adapted for screw threaded be desired to close the circuit, therebypushing the spring 15 to the right untilrjtl ejiapex of the angular portion again passesf'beyond the screw 18. at which time the inclined sur-. face acting against the screw 18 will force the switch element back to the position .shown in Fig. 1.

. Referring more particularly to Figs. 3. and I, I show my device applied to a pend ant switch having the two insulating eleengagementas shown at 21. A movable element 22 is pivoted as shown at 23 and is adapted to make contact with two contact posts 2e connected respectively to the lead in wires25, but insulated from each other.

The movable element- 22 occupies either the position shown in Fig. 3 against the limit stop 26 or an alternative position against the stop 27, in which lower position it closes circuit through the wires 25. This arm 22 has an extending bracket 28 which might L be likened to the screw 18 of Fig. 1, and

which is adapted to cooperate with a spring 29 mounted upon a screw 30 forming part of the reciprocating plunger 31. This spring 29 by being slid either to the right or to the left causes the actuation of the contact element 22 similarly to the actuation of A stop 32 conplunger within ing a pivoted oscillatory switch arm, re-

silient reciprocatory means engaging said arm to move the same by snap action from either limiting position to the other, and

of a "U-shaped spring. bent at its arhi engaging-extremity to form a V-shaped cam.

3. In a switch the combination of havmg a pivoted oscillatory switch arm, resilient reciprocatory means engaging said arm to move the same by snap action either from limiting position to the other, and a crank to reciprocate said, reciprocatory means. said-reciprocatory means consisting of a U-shaped spring.

' 4. In a switch the combination of having a pivoted oscillatory switch arm, re-

silient reciprocatory means engaging said arm to move'the same by snap action from either limiting position to the other, and a crank to reciprocate said reciprocatory means, said reciprocatorv means consisting of a U-shaped spring bent at its arm en.- gaging extremity to, form a V-shaped cam.

5. In, a switch the combination of having apivoted oscillatory switch arm, resilient reciprocatory means engaging said arm to move the same by snap action from either limiting position to the other, and a crank to reciprocate said reciprocatory means, said reciproc'atory means consisting of a U-shaped spring coiled about said crank bent at its arm engaging extremity to forms). V-sha'ped cam.

.In witness whereof, I hereunto subscribe my name this 21st day of November, A. D.

DAVID D. GORDON. Witnesses A. L. JONES, HAZEL ANN Joxas. 

